Think Lumens, Not Watts

tHINK LUMENs, NOT WATTS

Higher Watts ≠ More lumens

Luminous Efficacy is the best performance indicator of a light source, not Watts. Higher luminous efficacy ensures brighter light using the same power.

✅ More efficient light

· H11 Headlight
· 38.2 watts
· 4095 lumens
· 107 lumens/watts (higher luminous efficacy)

❌ Less efficient light

· H11 Headlight
· 44.5 watts
· 3480 lumens
· 78.2 lumens/watts (lower luminous efficacy)

Why test lighting efficiency?

Higher watts doesn't necessarily mean brighter light. The luminous efficacy value indicates a bulb's lighting efficiency. Bulbs with higher luminous efficacy produce more light and less heat waste.

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Test all kinds of automotive lightings

Help your clients compare the pros/cons of different lighting options to make more informative purchasing decisions.

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LED

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HID

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Think Lumens, Not Watts

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Luminous Efficacy

Higher luminous efficacy.
More light, less watts

Use luminous efficacy measurement to easily identify the more efficient light bulb.

What is luminous efficacy and why it matters?

Luminous Efficacy is the best performance indicator of a light source, not Watts. A more efficient light bulb can produce more lumens than a less efficient one with higher watts.

When comparing two lights of the same watts, go for the higher luminous efficacy. Higher luminous efficacy means higher lighting efficiency, which ensures brighter light using the same amount of power.

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All-in-one tester

The only lighting tester you need for all your lighting testing needs.

· Lumens
· Luminous efficacy (lighting efficiency)
· Watts
· Voltage
· Current

Quick comparsion

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Shopping Experience

All our products — whether we make them or not — are backed by our lifetime warranty.

On-time Delivery

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Best in Class Service

All our products — whether we make them or not — are backed by our lifetime warranty.

FAQs

Frequently asked questions

Can I recalibrate the tester?

Yes. Request your PIN code by emailing info@tklamp.co with the serial number of your tester. The serial number is a 4-digit number printed on the top right corner of the display.

How often should I recalibrate the tester?

We suggest to recalibrate the tester every 3-6 months.

How long does the shipping take?

US: 5-12 business days
EU: 9-18 business days
Rest of the world: 5-21 business days.

Do you ship international?

Yes. We do! Input your address to check the shipping cost.

Do you offer the integrating sphere in different sizes?

Currently we do not. We use a standard sphere for both flashlight and headlight tester. Drop us a line if you are looking for a bigger or smaller sphere.

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Portable Integrating Sphere Lighting Tester

Comparing lights?
Lumen matters.

Lumen measurement made easy

Think Lumens, Not Watts

Higher Watts ≠ More lumens

✅ More efficient light

❌ Less efficient light